Czechoslovak Journal of Physics

, Volume 46, Supplement 1, pp 135–136 | Cite as

Planned experiment to measure the superfluid density of confined4He near Tλ

  • David Pearson
  • Talso C. P. Chui
  • Ronald J. Tonucci
  • John A. Lipa
Liquid Helium
  • 10 Downloads

Abstract

An experiment using Helmholtz resonator techniques is proposed to measure the effects of confinement on the superfluid density in4He near the lambda point. Recent experimental and technological innovations afford the opportunity of dramatically improving previous measurements. We will exploit recent high resolution thermometry techniques which provide a resolution of the lambda point to within 10−9 K. In addition, the development of glass channel arrays with less than a one percent deviation throughout the entire array and high packing densities will provide a containment sample that is much improved over previous work. Finally, we will employ a high resolution pressure sensor with a SQUID readout to detect the small signal associated with a close approach to the transition.

Keywords

Critical Exponent High Packing Density Entire Array Helmholtz Resonator Phase Slip 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Institute of Physics, Acad. Sci. CR 1996

Authors and Affiliations

  • David Pearson
    • 1
  • Talso C. P. Chui
    • 1
  • Ronald J. Tonucci
    • 2
  • John A. Lipa
    • 3
  1. 1.Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadena
  2. 2.Optical Science DivisionNaval Research LaboratoryWashington, DC
  3. 3.Department of PhysicsStanford UniversityStanford

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